Calibre catalogue / Small calibre / 2780A
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2780A fitting drawing (PDF)
Dimensions, stem height and hand fitting. Keyed to the base calibre, so sibling references share this drawing. Supplied for casing and fitting purposes only.
Small calibre
2780A
2 Series
- —Centre seconds
- —Skeletonised
| Specification | |
|---|---|
| Size | 25 mm (0.984 in) |
| Height | 3.5 mm (0.138 in) |
| Jewels | 17 |
| Frequency | 21,600 vph (3 Hz) |
| Power reserve | 42 h |
| Finish colour | White |
Check dimensions against the fitting drawing before tooling a case.
